Coil-spring.



No. 810,146. PATENTED JAN. 16, 1906.

COIL SPRING APPLICATION TILED JUNE 14, 1905.

Witne s'ses: ju/antor':

ELI HOGAN, OF PORTLAND. OREGON.

COIL-SPRING,

Specification of Letters Patent.

Patented Jan. 16, 1906.

Application filed June 14, 1905. $erial No. 265,285.

To all w/wm, it may concern.-

Be it known that I, ELI HOGAN, a citizen of the United States, residing at Portland, in the county of Multnomah and State of Oregon, have invented new and useful Improvements in Coil-Springs, of which the following is a specification. Y

The object of my invention is to construct a strong, durable, and eflicient coil-spring with loops, hooks, eyes, snaps, rings, &c., all complete of one unbroken piece of rod or Wire of that class in which the coil is formed by winding a rod or wire round and round until the coil or spring is formed. Then a piece of rod or wire of sufficient length is left on each end of coil to form a small loop to be bent around and fastened to the last round of coil. Then the loose end is carried through the coil and a loop, hook, eye, snap, ring, or whatever is desired is made. Then the end is again carried through the coil and the final end is again bent and fastened to outside coil opposite the starting-place. (This is done at each end of coil.) This makes the springs cover a larger field of usefulness, and they are more efficient than common springs in that the rod or wire passing through coil double from each end prevents buckling of the coil, and being fastened opposite each other on outside round of coil on each end the strain or tension is equal on two sides and each end of the spring.

In the accompanying drawings, which are a part of my specification, Figure 1 is a side view of spring with loops, in which A is the coil-spring. 1 is one end of coil-spring with a piece of rod or wire long enough to make a small loop bend and fasten around last round of coil. The loose end is carried through coil forming loop B and returning through the coil bent and fastened to last round of coil at 2 opposite starting-place. The rod or wire on the other end of coil is treated in the same manner,.forming the loop C.

Fig. 2 is a modification of my invention, showing only a skeleton View of coil-spring A. It shows hoWT can combine loops, hooks, eyes, snaps, rings, &c., with the coil-spring. The rod or wire left to one end of coil is bent and fastened around last round of coil at 1, then carried through the coil, forming the eye B, returnin through coil, and the final end is bent and fastened around coil at 2 opposite starting-place, then twisted, as at 5, to make the eye B. The rod or wire on the other end of coil is bent and fastened around coil at 3, and the loose end is carried through coil, forming a long loop C, returning through the coil, and the final end is bent and fastened around co l of spring again at L opposite starting-place, then twisted together at 6. Then one strand is pulled up, making a tongue 7 to prevent snap from coming unfastened, twisted together again at 8 to prevent tongue from pulling down, and slightly bent up at 9 for convenience in snapping.

Should the coil be closely wound, it would be extended by pushing on the loops B and C toward the coil. If loosely wound, it would be compressed by pulling on the loops B and C from the coil. If medium wound, it could be extended and compressed by alternately pushing and pulling on the loops B and C.

Fig. 2 is one of many ways my invention can be used. The eye B is for checkrein or bridle-rein, and the snap to be fastened to the bits. The spring will prevent any sudden jerks to the horses mouth, which makes it more merciful to the horse and at the same time easier to the driver, as the horse does not jerk him when it swings or throws its head. The spring is' not liable to be broken or pulled apart, and at the same time it is flexible enough to prevent sudden jerking to horse and driver. Also it lessens undue strain on the harness.

The spring can be used with modifications Without departing from the original principle.

of my invention for bed-springs, carriagesprings, tonguesupport springs, scales--in fact,'most every way a coil-spring can be used.

Some of the advantages of my invention are, first, it is made all complete with loops, hooks, eyes, snaps, rings, &c., of one unbroken piece of rod or wire; second, it has four rods or wires, two from each end, passing through the coil to support it, and as they are fastened around last round of coil opposite each other the strain or tension is the same looped straining or tension elements, and a coiled compression-spring held by its opposite ends between them.

2. A coil-spring connection device, consisting of a single piece of Wire formed into tWo looped straining or tension elements, and a coiled compression-spring held by its ends between them, the straining or tension elements passing through the compressionspring.

3. A coil-spring connectlon device, consistmg of a single piece of mm formed into two overlapping looped straining'or tension elements, and a coiled compression-spring encircling the overlapping portions of the tension elements and held between the inner ends thereof.

In testimony that I claim the foregoing as my own I have hereto signed my name in the presence of tWo Witnesses.

ELI HOGAN.

Witnesses:

J. H. ANDREWS, EDWIN L. FURMAN. 

